Those are good reasons, and I appreciate when the attribute is used properly in these cases. It's annoying to have to say "no, don't remember this updated password" to my browser every single time I visit certain sites that ask for OTPs that my browser wants to autofill.

In the token case, I wonder whether they should have been password fields to begin with. Replacing a 6-digit OTP with asterisks is of questionable benefit, because the shoulder-surfer it thwarts can't reuse the OTP and is really unlikely to swipe it and use it before you do.